Mature size & growth rate

How big does Burrawang Palm (Macrozamia spiralis) get?

Also called Burrawang Palm, Burrawang, Spiralling Macrozamia.

More about burrawang palm

About Burrawang Palm

Macrozamia spiralis · also called Burrawang Palm, Burrawang · tropical

Macrozamia spiralis is a slow-growing Australian cycad native to coastal NSW, producing a short trunk and arching, dark-green fronds with spirally arranged leaflets. It tolerates dry, sandy soils and partial shade, making it a striking low-maintenance specimen for frost-free gardens. All parts are severely toxic to pets and humans.

Mature size: 1–1.5 m tall, 1.5–2 m spread

Indoor size vs how big it gets in the wild

Burrawang Palm grows on a tree's timeline and scale — indoors it becomes a tall, trunked statement plant rather than a tabletop one. Indoors and in a pot, expect 1–1.5 m tall, 1.5–2 m spread. A pot, your light levels and a little pruning are what set the final size in a home, far more than the plant's theoretical potential.

It gains real height on a trunk or main stem, adding a tier of leaves a year and eventually reaching for the ceiling — this is a plant you grow up, not out.

Growth rate and years to mature

Burrawang Palm is a slow grower. Realistically, expect a decade or more — slow growers like this add only a few centimetres a year, so expect 8-15+ years to reach their indoor ceiling. Its feeding profile backs this up: apply a slow-release fertiliser formulated for cycads or palms in spring and again in midsummer. cycads have modest nutrient needs; excess nitrogen produces lush but weak growth. do not fertilise in autumn or winter.

Want this turned into the right next pot at the right moment? The pot size calculator and the burrawang palm repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast burrawang palm grows.

How to keep burrawang palm smaller

You are not stuck with the maximum size. For burrawang palm specifically, these are the levers, in order of impact:

The decisive tool is the secateurs: burrawang palm can be topped (cut the main growing tip) to cap its height and force a bushier, shorter shape.
Keeping it deliberately pot-bound in a snug container slows the whole plant and limits ultimate size.
Prune in spring so it heals fast; remove the tallest leader back to a node to reset the height.
Good news: slow growth means topping it once buys you years before it needs doing again.

The keep-it-smaller method, step by step

Pick the new height. Decide how tall you want burrawang palm and find a leaf node or branch point just below that.
Top the main stem. Cut the main growing tip cleanly just above that node in spring; this permanently caps the height and forces side branches.
Keep the pot snug. Avoid jumping to a much bigger pot — a slightly restricted rootball keeps the whole plant smaller.
Maintain the shape. Prune back the tallest new leaders each spring to hold it at the height you chose.

How to grow burrawang palm bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for burrawang palm the accelerators are:

It already wants the bright light it needs; warmth, a yearly pot-up and spring-summer feed are the accelerators.
Pot up a size every year or two while young; restricted roots are the main thing holding height back.
Feed regularly through the growing season and keep it warm — height comes from sustained good conditions.

Light is almost always the ceiling. The burrawang palm light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When burrawang palm outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for burrawang palm:

The top leaves pressing against or bent by the ceiling — the classic "this is now too tall indoors" sign.
It has to be moved away from a light source it has literally outgrown.
Roots filling the largest pot you can reasonably keep indoors — at that point it is top-or-prune or move it outside (if hardy).

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the burrawang palm repotting guide. If you want more of this plant instead of a bigger one, the burrawang palm propagation guide turns prunings into new plants.

Burrawang Palm size — frequently asked questions

How big does burrawang palm get?

Burrawang Palm reaches 1–1.5 m tall, 1.5–2 m spread when grown indoors. It gains real height on a trunk or main stem, adding a tier of leaves a year and eventually reaching for the ceiling — this is a plant you grow up, not out.

Is burrawang palm slow or fast growing?

Burrawang Palm is a slow grower. Expect a decade or more — slow growers like this add only a few centimetres a year, so expect 8-15+ years to reach their indoor ceiling. Burrawang Palm grows on a tree's timeline and scale — indoors it becomes a tall, trunked statement plant rather than a tabletop one.

How long does burrawang palm take to reach full size?

Roughly a decade or more — slow growers like this add only a few centimetres a year, so expect 8-15+ years to reach their indoor ceiling. Light, pot size and feeding move that timeline more than anything else.

How do I keep burrawang palm smaller?

The decisive tool is the secateurs: burrawang palm can be topped (cut the main growing tip) to cap its height and force a bushier, shorter shape. Keeping it deliberately pot-bound in a snug container slows the whole plant and limits ultimate size. Prune in spring so it heals fast; remove the tallest leader back to a node to reset the height. Good news: slow growth means topping it once buys you years before it needs doing again.

How can I make burrawang palm grow bigger or faster?

It already wants the bright light it needs; warmth, a yearly pot-up and spring-summer feed are the accelerators. Pot up a size every year or two while young; restricted roots are the main thing holding height back. Feed regularly through the growing season and keep it warm — height comes from sustained good conditions.